| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_recv_rx1.template,v 1.3 2005/07/22 18:21:55 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "CPP_EEOPTIONS.h" |
| 5 |
#include "W2_OPTIONS.h" |
| 6 |
|
| 7 |
SUBROUTINE EXCH2_RECV_RX1( |
| 8 |
I tIlo, tIhi, tiStride, |
| 9 |
I tJlo, tJhi, tjStride, |
| 10 |
I tKlo, tKhi, tkStride, |
| 11 |
I thisTile, thisI, nN, |
| 12 |
I e2Bufr1_RX, e2BufrRecSize, |
| 13 |
I mnb, nt, |
| 14 |
U array, |
| 15 |
I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
| 16 |
U e2_msgHandles, myTiles, |
| 17 |
I commSetting, |
| 18 |
I myThid ) |
| 19 |
|
| 20 |
IMPLICIT NONE |
| 21 |
|
| 22 |
#include "SIZE.h" |
| 23 |
#include "EEPARAMS.h" |
| 24 |
#include "EESUPPORT.h" |
| 25 |
#include "W2_EXCH2_TOPOLOGY.h" |
| 26 |
|
| 27 |
C === Routine arguments === |
| 28 |
C tIlo, tIhi, tIstride :: index range in I that will be filled in target "array" |
| 29 |
C tJlo, tJhi, tJstride :: index range in J that will be filled in target "array" |
| 30 |
C tKlo, tKhi, tKstride :: index range in K that will be filled in target "array" |
| 31 |
C thisTile :: Rank of the receiveing tile |
| 32 |
C thisI :: Index of the receiving tile within this process (used |
| 33 |
C :: to select buffer slots that are allowed). |
| 34 |
C nN :: Neighbour entry that we are processing |
| 35 |
C e2Bufr1_RX :: Data transport buffer array. This array is used in one of |
| 36 |
C :: two ways. For PUT communication the entry in the buffer |
| 37 |
C :: associated with the source for this receive (determined |
| 38 |
C :: from the opposing_send index) is read. For MSG communication |
| 39 |
C :: the entry in the buffer associated with this neighbor of this |
| 40 |
C :: tile is used as a receive location for loading a linear |
| 41 |
C :: stream of bytes. |
| 42 |
C e2BufrRecSize :: Number of elements in each entry of e2Bufr1_RX |
| 43 |
C mnb :: Second dimension of e2Bufr1_RX |
| 44 |
C nt :: Third dimension of e2Bufr1_RX |
| 45 |
C array :: Target array that this receive writes to. |
| 46 |
C i1Lo, i1Hi :: I coordinate bounds of target array |
| 47 |
C j1Lo, j1Hi :: J coordinate bounds of target array |
| 48 |
C k1Lo, k1Hi :: K coordinate bounds of target array |
| 49 |
C e2_msgHandles :: Synchronization and coordination data structure used to coordinate access |
| 50 |
C :: to e2Bufr1_RX or to regulate message buffering. In PUT communication |
| 51 |
C :: sender will increment handle entry once data is ready in buffer. |
| 52 |
C :: Receiver will decrement handle once data is consumed from buffer. For |
| 53 |
C :: MPI MSG communication MPI_Wait uses hanlde to check Isend has cleared. |
| 54 |
C :: This is done in routine after receives. |
| 55 |
C myTiles :: List of nt tiles that this process owns. |
| 56 |
C commSetting :: Mode of communication used to exchnage with this neighbor |
| 57 |
C myThid :: Thread number of this instance of EXCH2_RECV_RX1 |
| 58 |
C |
| 59 |
INTEGER tILo, tIHi, tiStride |
| 60 |
INTEGER tJLo, tJHi, tjStride |
| 61 |
INTEGER tKLo, tKHi, tkStride |
| 62 |
INTEGER i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi |
| 63 |
INTEGER thisTile, nN, thisI |
| 64 |
INTEGER e2BufrRecSize |
| 65 |
INTEGER mnb, nt |
| 66 |
_RX e2Bufr1_RX( e2BufrRecSize, mnb, nt, 2 ) |
| 67 |
_RX array(i1Lo:i1Hi,j1Lo:j1Hi,k1Lo:k1Hi) |
| 68 |
INTEGER e2_msgHandles(mnb, nt) |
| 69 |
INTEGER myThid |
| 70 |
INTEGER myTiles(nt) |
| 71 |
CHARACTER commSetting |
| 72 |
|
| 73 |
C == Local variables == |
| 74 |
C itl, jtl, ktl :: Loop counters |
| 75 |
C :: itl etc... target local |
| 76 |
C :: itc etc... target canonical |
| 77 |
C :: isl etc... source local |
| 78 |
C :: isc etc... source canonical |
| 79 |
INTEGER itl, jtl, ktl |
| 80 |
c INTEGER itc, jtc, ktc |
| 81 |
c INTEGER isc, jsc, ksc |
| 82 |
c INTEGER isl, jsl, ksl |
| 83 |
C tt :: Target tile |
| 84 |
C iBufr :: Buffer counter |
| 85 |
INTEGER tt |
| 86 |
INTEGER iBufr |
| 87 |
C mb, nb :: Selects e2Bufr, msgHandle record to use |
| 88 |
C ir :: |
| 89 |
INTEGER mb, nb, ir |
| 90 |
C oN :: Opposing send record number |
| 91 |
INTEGER oN |
| 92 |
C Loop counters |
| 93 |
c INTEGER I, nri, nrj, nrk |
| 94 |
INTEGER I |
| 95 |
|
| 96 |
C MPI setup |
| 97 |
#ifdef ALLOW_USE_MPI |
| 98 |
c INTEGER theTag, theSize, theType |
| 99 |
INTEGER theTag, theType |
| 100 |
INTEGER sProc, tProc |
| 101 |
INTEGER nri, nrj, nrk |
| 102 |
INTEGER mpiStatus(MPI_STATUS_SIZE), mpiRc |
| 103 |
#ifdef W2_E2_DEBUG_ON |
| 104 |
CHARACTER*(MAX_LEN_MBUF) messageBuffer |
| 105 |
#endif |
| 106 |
#endif |
| 107 |
|
| 108 |
tt=exch2_neighbourId(nN, thisTile ) |
| 109 |
oN=exch2_opposingSend_record(nN, thisTile ) |
| 110 |
|
| 111 |
C Handle receive end data transport according to communication mechanism between |
| 112 |
C source and target tile |
| 113 |
IF ( commSetting .EQ. 'P' ) THEN |
| 114 |
C 1 Need to check and spin on data ready assertion for multithreaded mode, for now do nothing i.e. |
| 115 |
C assume only one thread per process. |
| 116 |
|
| 117 |
C 2 Need to set e2Bufr to use put buffer from opposing send. |
| 118 |
oN = exch2_opposingSend_record(nN, thisTile ) |
| 119 |
mb = oN |
| 120 |
DO I=1,nt |
| 121 |
IF ( myTiles(I) .EQ. tt ) THEN |
| 122 |
nb = I |
| 123 |
ir = 1 |
| 124 |
ENDIF |
| 125 |
ENDDO |
| 126 |
C Get data from e2Bufr(1,mb,nb) |
| 127 |
ELSEIF ( commSetting .EQ. 'M' ) THEN |
| 128 |
#ifdef ALLOW_USE_MPI |
| 129 |
C Setup MPI stuff here |
| 130 |
nb = thisI |
| 131 |
mb = nN |
| 132 |
ir = 2 |
| 133 |
theTag = (tt-1)*MAX_NEIGHBOURS + oN |
| 134 |
& + 10000*( |
| 135 |
& (thisTile-1)*MAX_NEIGHBOURS + oN |
| 136 |
& ) |
| 137 |
tProc = exch2_tProc(thisTile)-1 |
| 138 |
sProc = exch2_tProc(tt)-1 |
| 139 |
theType = MPI_REAL8 |
| 140 |
nri = (tIhi-tIlo+1)/tiStride |
| 141 |
nrj = (tJhi-tJlo+1)/tjStride |
| 142 |
nrk = (tKhi-tKlo+1)/tkStride |
| 143 |
iBufr = nri*nrj*nrk |
| 144 |
CALL MPI_Recv( e2Bufr1_RX(1,mb,nb,ir), iBufr, theType, sProc, |
| 145 |
& theTag, MPI_COMM_MODEL, mpiStatus, mpiRc ) |
| 146 |
#ifdef W2_E2_DEBUG_ON |
| 147 |
WRITE(messageBuffer,'(A,I4,A,I4,A)') ' RECV FROM TILE=', tt, |
| 148 |
& ' (proc = ',sProc,')' |
| 149 |
CALL PRINT_MESSAGE(messageBuffer, |
| 150 |
I standardMessageUnit,SQUEEZE_RIGHT, |
| 151 |
I myThid) |
| 152 |
WRITE(messageBuffer,'(A,I4,A,I4,A)') ' INTO TILE=', thisTile, |
| 153 |
& ' (proc = ',tProc,')' |
| 154 |
CALL PRINT_MESSAGE(messageBuffer, |
| 155 |
I standardMessageUnit,SQUEEZE_RIGHT, |
| 156 |
I myThid) |
| 157 |
WRITE(messageBuffer,'(A,I10)') ' TAG=', theTag |
| 158 |
CALL PRINT_MESSAGE(messageBuffer, |
| 159 |
I standardMessageUnit,SQUEEZE_RIGHT, |
| 160 |
I myThid) |
| 161 |
WRITE(messageBuffer,'(A,I4)') ' NEL=', iBufr |
| 162 |
CALL PRINT_MESSAGE(messageBuffer, |
| 163 |
I standardMessageUnit,SQUEEZE_RIGHT, |
| 164 |
I myThid) |
| 165 |
#endif /* W2_E2_DEBUG_ON */ |
| 166 |
C Set mb to neighbour entry |
| 167 |
C Set nt to this tiles rank |
| 168 |
mb = nN |
| 169 |
#endif |
| 170 |
ELSE |
| 171 |
STOP 'EXCH2_RECV_RX1:: commSetting VALUE IS INVALID' |
| 172 |
ENDIF |
| 173 |
|
| 174 |
iBufr=0 |
| 175 |
DO ktl=tKlo,tKhi,tKStride |
| 176 |
DO jtl=tJLo, tJHi, tjStride |
| 177 |
DO itl=tILo, tIHi, tiStride |
| 178 |
C Read from e2Bufr1_RX(iBufr,mb,nb) |
| 179 |
iBufr=iBufr+1 |
| 180 |
array(itl,jtl,ktl)=e2Bufr1_RX(iBufr,mb,nb,ir) |
| 181 |
ENDDO |
| 182 |
ENDDO |
| 183 |
ENDDO |
| 184 |
|
| 185 |
RETURN |
| 186 |
END |
| 187 |
|
| 188 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 189 |
|
| 190 |
CEH3 ;;; Local Variables: *** |
| 191 |
CEH3 ;;; mode:fortran *** |
| 192 |
CEH3 ;;; End: *** |
Parent Directory
| 
Revision Log
| 
Revision Graph